1982440023 has 16 divisors (see below), whose sum is σ = 2830191840. Its totient is φ = 1229904896.

The previous prime is 1982440013. The next prime is 1982440063. The reversal of 1982440023 is 3200442891.

It is a cyclic number.

It is not a de Polignac number, because 1982440023 - 2¹⁶ = 1982374487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982440013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213840 + ... + 222917.

It is an arithmetic number, because the mean of its divisors is an integer number (176886990).

Almost surely, 2^1982440023 is an apocalyptic number.

1982440023 is a deficient number, since it is larger than the sum of its proper divisors (847751817).

1982440023 is a wasteful number, since it uses less digits than its factorization.

1982440023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436866.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1982440023 is about 44524.6002003387. The cubic root of 1982440023 is about 1256.2228411643. Note that the first 3 decimals are identical.

The spelling of 1982440023 in words is "one billion, nine hundred eighty-two million, four hundred forty thousand, twenty-three".